(19)

(11)

EP 4 172 140 A1

(12)

(43) Date of publication: 03.05.2023 Bulletin 2023/18 (21) Application number: 21734848.1 (22) Date of filing: 24.06.2021

(51) International Patent Classification (IPC):  C07C 275/26(2006.01) C07D 239/34(2006.01) C07D 213/64(2006.01) A61P 25/00(2006.01) (52) Cooperative Patent Classification (CPC): A61P 25/00; C07C 275/26; C07D 213/64; C07D 239/34; C07C 2601/04 (86) International application number: PCT/EP2021/067288 (87) International publication number: WO 2021/260090 (30.12.2021 Gazette 2021/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 25.06.2020 WO PCT/EP2020/067903 (71) Applicant: Idorsia Pharmaceuticals Ltd 4123 Allschwil (CH)	(72) Inventors: BEZENCON, Olivier 4123 Allschwil (CH) DEYMIER, Caroline 4123 Allschwil (CH) PETERS, Jens-Uwe 4123 Allschwil (CH) SIEGRIST, Romain 4123 Allschwil (CH) SURIVET, Jean-Philippe 4123 Allschwil (CH) (74) Representative: Koberstein, Ralf  Idorsia Pharmaceuticals Ltd Hegenheimermattweg 91 4123 Allschwil 4123 Allschwil (CH)